Select, few

Recently, there's been a lot of interest in DSLs to address the so-called
N+1 selects problem,
which describes the very common situation where you

Do one database query to get a list of things, say user IDs;

for each, call some sort of processing function that happens to

do another query, say for each user's name.

It can be even worse than that, as in this example, where (for some reason)
we want to append the last name of every person in a group to the first name
of their best friend. (Maybe they're getting married.)